← Back to Botany

Photosynthesis In Higher Plants

210 Questions Start Allen Test
All Exams Allen Errorless
Q176 Allen 6. NCERT BASED QUESTIONS MCQ
2H₂O → 4H⁺ + O₂ + 4e− Above reaction is a part of :-
A.
Biosynthetic phase of photosynthesis in C3 plants
B.
Z-Scheme of light reaction of photosynthesis
C.
Hatch and slack pathway
D.
Cyclic photophosphorylation
Q177 Allen 6. NCERT BASED QUESTIONS MCQ
Respectively during the creation of proton gradient and breakdown of proton gradient in chloroplast, protons move :-
A.
from the stroma to cytoplasm and from the cytoplasm to stroma
B.
from the cytoplasm to stroma and from stroma to cytoplasm
C.
from the thylakoid lumen to stroma and from the stroma to thylakoid lumen
D.
from the stroma to thylakoid lumen and from the thylakoid lumen to stroma
Q178 Allen 6. NCERT BASED QUESTIONS MCQ
In photosynthesis (Choose the correct one):
A.
Phosphorylation can occur in light reaction only
B.
Phosphorylation can occur in biosynthetic phase only
C.
Phosphorylation can occur in both light reaction and biosynthetic phase
D.
Phosphorylation not occurs at all
Q179 Allen 6. NCERT BASED QUESTIONS MCQ
Which of the following is a probable reason that why cyclic photophosphorylation takes place in photosynthesis?
A.
To supply extra carbon dioxide to Calvin cycle
B.
To utilise the light of wavelength of 680 nm which is not utilised in noncyclic photophosphorylation
C.
To produce extra NADPH for biosynthetic phase
D.
To meet the difference in number of ATP and NADPH
Q180 Allen 6. NCERT BASED QUESTIONS MCQ
C4 plants are special plants having Kranz anatomy in their leaves, here term 'Kranz' is a reflection of :-
A.
Large number of chloroplasts in mesophyll cells.
B.
Capacity to tolerate high temperatures.
C.
Absence of chloroplasts in bundle sheath cells.
D.
Ring like arrangement of cells.
Q181 Allen 6. NCERT BASED QUESTIONS MCQ
During the dark reaction of photosynthesis in C₄ plants (Choose the correct one) :-
A.
Regeneration step occurs in mesophyll cell only.
B.
Regeneration step occurs in bundle sheath cell only.
C.
Regeneration steps occur in both mesophyll cell and bundle sheath cell.
D.
There is no step of regeneration.
Q182 Allen 6. NCERT BASED QUESTIONS MCQ
RuBP+A RuBisCO → 2 × Phosphoglycerate RuBP+B RuBisCO → Phosphoglycerate + Phosphoglycolate Choose correct match for A and B from given options :-
A.
A = NADPH, B = CO₂
B.
A = O₂, B = CO₂
C.
A = CO₂, B = O₂
D.
A = CO₂, B = NADPH
Q183 Allen 6. NCERT BASED QUESTIONS MCQ
Before the discovery of RuBP as primary acceptor of $\mathsf { C O } _ { 2 }$ in Calvin cycle, it was believed that the primary acceptor would be:
A.
6 carbon compound
B.
2 carbon compound
C.
3 carbon compound
D.
4 carbon compound
Q184 Allen 7. ANALYTICAL QUESTIONS MCQ
Glycolate accumulates in chloroplast at :-
A.
Low temp
B.
Low $\mathsf { C O } _ { 2 }$
C.
Visible light illumination
D.
High $\mathsf { C O } _ { 2 }$
Q185 Allen 7. ANALYTICAL QUESTIONS MCQ
For the synthesis of one molecule of sucrose, how may ATP molecules are required in reduction step of Calvin cycle?
A.
24 ATP
B.
18 ATP
C.
2 ATP
D.
12 ATP
Q186 Allen 7. ANALYTICAL QUESTIONS MCQ
Which of the following is the product of oxidation during photosynthesis ?
A.
Carbon dioxide
B.
Glucose
C.
Water
D.
Oxygen
Q187 Allen 7. ANALYTICAL QUESTIONS MCQ
In Calvin cycle, $\mathsf { C O } _ { 2 }$ is fused with primary acceptor molecule to form 3C compound phosphoglycerate. If in this reaction $\mathsf { C O } _ { 2 }$ provides one carbon then how many carbons are present in primary acceptor molecule ?
A.
Five carbons
B.
Two carbons
C.
Six carbons
D.
Three carbons
Q188 Allen 7. ANALYTICAL QUESTIONS MCQ
In photosynthesis, NADPH + H⁺ are oxidised in :-
A.
Calvin cycle
B.
Non-cyclic photophosphorylation
C.
Cyclic photophosphorylation
D.
Z-scheme
Q189 Allen 7. ANALYTICAL QUESTIONS MCQ
Enzyme, which can catalyse both carboxylation and oxygenation of RuBP in the chloroplast, is not found in which of the following cells ?
A.
Mesophyll cells of C₄ plants.
B.
Mesophyll cells of C₃ plants.
C.
Mesophyll cells of CAM plants.
D.
Bundle sheath cells of C4 plants.
Q190 Allen 7. ANALYTICAL QUESTIONS MCQ
The product of light reaction of photosynthesis, which is not common between cyclic and non-cyclic photophosphorylation and is not utilized in Calvin cycle, is :-
A.
O₂
B.
ATP
C.
NADPH₂
D.
O₂ and ATP
Q191 Allen 7. ANALYTICAL QUESTIONS MCQ
Which phase of Calvin cycle does/do not use any energy rich molecule ?
A.
Carboxylation only
B.
Carboxylation and reduction
C.
Reduction and regeneration
D.
Reduction only
Q192 Allen 7. ANALYTICAL QUESTIONS MCQ
The C4 plants differ from C3 plants with reference to the :-
A.
Primary acceptor of $\mathsf { C O } _ { 2 }$ in dark reaction
B.
Type of end product of photosynthesis.
C.
Number of NADPH₂ that are consumed in synthesis of hexose.
D.
Type of pigments involved in photosynthesis.
Q193 Allen 7. ANALYTICAL QUESTIONS MCQ
The common feature between non-cyclic and cyclic photophosphorylation is :-
A.
Proton gradient formation
B.
Release of $\mathsf { O } _ { 2 }$
C.
Formation of NADPH + H⁺
D.
Photolysis of water
Q194 Allen 7. ANALYTICAL QUESTIONS MCQ
The second acceptor of CO₂ in C4 plants is :-
A.
PEP
B.
Malate
C.
Aspartate
D.
RuBP
Q195 Allen 7. ANALYTICAL QUESTIONS MCQ
In photosystem-I, the first electron acceptor is :-
A.
Plastocyanin
B.
An iron-sulphur protein
C.
Ferredoxin
D.
Cytochrome
Q196 Allen 7. ANALYTICAL QUESTIONS MCQ
During photorespiration, the oxygen consuming reaction(s) occur in :-
A.
Grana of chloroplasts and peroxisomes.
B.
Stroma of chloroplasts.
C.
Stroma of chloroplasts and mitochondria
D.
Stroma of chloroplasts and peroxisomes
Q197 Allen 7. ANALYTICAL QUESTIONS MCQ
The first acceptor of electrons from an excited chlorophyll molecule of photosystem Il is :-
A.
Quinone
B.
Cytochrome
C.
Iron-sulphur protein
D.
Ferredoxin
Q198 Allen 7. ANALYTICAL QUESTIONS MCQ
In the leaves of C4 plants, malic acid formation during CO₂ fixation occurs in the cells of :-
A.
Epidermis
B.
Mesophyll
C.
Bundle Sheath
D.
Phloem
Q199 Allen 7. ANALYTICAL QUESTIONS MCQ
In leaves of C₄ plants malic acid synthesis during CO₂ fixation occurs in :-
A.
Bundle sheath
B.
Guard cells
C.
Epidermal cells
D.
Mesophyll cells
Q200 Allen 7. ANALYTICAL QUESTIONS MCQ
The C4 plants are photosynthetically more efficient than C₃ plants because :-
A.
The $\mathsf { C O } _ { 2 }$ efflux is not prevented.
B.
They have more chloroplasts.
C.
The CO₂ compensation point is more.
D.
$\mathsf { C O } _ { 2 }$ generated during photorespiration is trapped and recycled through PEP carboxylase.